IBM 8671 Hardware Maintenance Manual - Page 63
System-board, locations
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System-board LED locations The following illustration shows the location of the LEDs on the system board. You might need to refer to this illustration when solving server problems. CPU 2 error LED (CR4) VRM 2 error LED (CR1) PCI bus A error LED (CR66) PCI-X bus B error LED (CR68) PCI-X slot 5 power LED (CR75) PCI-X slot 5 internal attention LED (CR73) PCI-X slot 5 external attention LED (CR74) PCI-X bus C error LED (CR76) PCI-X slot 6 external attention LED (CR77) PCI-X slot 6 internal attention LED (CR78) PCI-X slot 6 power LED (CR79) CPU mismatch error LED (CR14) Power error LED (CR15) DIMM 1 error LED (CR16) DIMM 2 error LED (CR17) DIMM 3 error LED (CR18) DIMM 4 error LED (CR20) DIMM 5 error LED (CR22) DIMM 6 error LED (CR23) CPU 1 error LED (CR24) VRM 1 error LED (CR33) Service processor activity LED (CR67) Chapter 4. Customer replaceable units 53
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